Twitter just sent out emails to all their users to inform them about the change in the way twitter interacts with external applications.

From now on all twitter application will use OAuth technology that will help application log in users without directly asking password. This means applications are no longer allowed to save password you just need  to connect the account once.

All long links will be shortened using t.co and wrapping will be done  and displayed in tweets with part of domain and title page. This will be extended to all apps.

egs A really long link such as http://www.amazon.com/Delivering-Happiness-Profits-Passion-Purpose/dp/0446563048 might be wrapped as http://t.co/DRo0trj for display on SMS, but it could be displayed to web or application users as amazon.com/Delivering- or as the whole URL or page title.

URL shortening services tr.im and is.gd are blocking clickbank hop urls. Clickbank urls are long and dirty, so are not fit for use in twitter. That is where URL shorteners come handy.

However, bit.ly is shortening clickbank hop urls.

Which is your favourite URL shortening service for affiliate marketing, especially clickbank? Please comment.

Google has launched its own url shortening service Goo.gl. However, Google URL Shortener is currently available for Google products and not for broader consumer use.

There is, fortunately, a trick to get your blog url shortened using Goo.gl. You must use Feedburner for your feeds. Just go to your Feeds -> Publicize -> Socialize and add a twitter account. Whenever you write a new post in your blog, Feedburner will automatically tweet it with the url shortened using Goo.gl.

You can then just copy it from your twitter stream and share it with your friends.

Do you have any other trick? Please share it in the comments section.

Update: Here is the shortened version of this blog post – http://goo.gl/fb/crP6

Update: You can use this chrome extension to shorten urls using Goo.gl